ph<7。物理學裏太陽光是白色光,被三棱鏡折射後顯示出赤橙黃綠青藍紫七種顏色...
5,化學上的ph值用數字7:中性: ph=7; 堿性:ph>7; 酸性:
本帖於 2026-02-10 03:35:48 時間, 由普通用戶 疏影笑寒 編輯
ph<7。物理學裏太陽光是白色光,被三棱鏡折射後顯示出赤橙黃綠青藍紫七種顏色...
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